A key difficulty is this. Sunni marginalization would be lessened if provincial elections were held and more representative provincial governments were brought to power, including in Baghdad. (Provincial elections should have been held by now). On the other hand, the Sadr movement has become so popular in the Shiite south that there is a prospect that it would sweep to power in provinces such as Muthanna, Maysan, Dhi Qar, Wasit, Babil and Qadisiyah. The current provincial administrations in the south are mainly Supreme Council for Islamic Revolution in Iraq and relatively cooperative with the US. So the US can reduce Sunni marginalization by holding provincial elections soon; but thereby risks that the Mahdi Army will end up controlling most of the South. (SCIRI wouldn’t lose everything– Najaf and Karbala are safe for it).